package com.koala.javaBase.basicgrammar.day08;

/**
 * Create by koala on 2020-11-22
 *
 * ⑤ 数组元素的默认初始化值
 * 		> 数组元素是整型：0
 * 		> 数组元素是浮点型：0.0
 * 		> 数组元素是char型：0或'\u0000'，而非'0'
 * 		> 数组元素是boolean型：false
 *
 * 		> 数组元素是引用数据类型：null
 *
 *  ⑥ 数组的内存解析
 *
 */
public class ArrayTest02 {

    public static void main(String[] args) {
        //5.数组元素的默认初始化值
        int[] arr = new int[3];
        for(int i = 0;i < arr.length;i++){
            System.out.println(arr[i]);
        }
        System.out.println("**********");

        short[] arr1 = new short[3];
        for(int i = 0;i < arr1.length;i++){
            System.out.println(arr1[i]);
        }
        System.out.println("**********");

        float[] arr2 = new float[3];
        for(int i = 0;i < arr2.length;i++){
            System.out.println(arr2[i]);
        }
        System.out.println("**********");

        char[] arr3 = new char[3];
        for(int i = 0;i < arr3.length;i++){
            System.out.println("---" + arr3[i] + "***");
        }

        if(arr3[0] == 0){
            System.out.println("你好！");
        }
        System.out.println("**********");

        boolean[] arr4 = new boolean[3];
        System.out.println(arr4[0]);

        System.out.println("**********");
        String[] arr5 = new String[3];
        System.out.println(arr5[0]);
        if(arr5[0] == null){
            System.out.println("北京天气不错！");
        }
    }

}
